The Ohio medical board concluded [1] that pain physician William D. Leak had performed “unnecessary” nerve tests on 20 patients and subjected some to “an excessive number of invasive procedures,” including injections of agents that destroy nerve tissue.

Yet the finding, posted on the board’s public website, didn’t prevent Eli Lilly and Co. from using him as a promotional speaker and adviser. The company has paid him $85,450 since 2009.

In 2001, the U.S. Food and Drug Administration ordered [2] Pennsylvania doctor James I. McMillen to stop “false or misleading” promotions of the painkiller Celebrex, saying he minimized risks and touted it for unapproved uses.

Still, three other leading drug makers paid the rheumatologist $224,163 over 18 months to deliver talks to other physicians about their drugs.

And in Georgia, a state appeals court in 2004 upheld [3] a hospital’s decision to kick Dr. Donald Ray Taylor off its staff. The anesthesiologist had admitted giving young female patients rectal and vaginal exams without documenting why. He’d also been accused of exposing women’s breasts during medical procedures. When confronted by a hospital official, Taylor said, “Maybe I am a pervert, I honestly don’t know,” according to the appellate court ruling.